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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Vol. 20, Iss. 2 — Feb. 1, 2003
  • pp: 256–272

Rigorous model of the scattering of a focused spot by a grating and its application in optical recording

J. M. Brok and H. P. Urbach  »View Author Affiliations

JOSA A, Vol. 20, Issue 2, pp. 256-272 (2003)

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We describe a rigorous model for the scattering of a three-dimensional focused spot by a one-dimensional periodic grating. The incident field is decomposed into a sum of quasi-periodic fields, and the scattering of each of these is computed inside one unit cell of the grating. The model is applied to the simulation of the readout of a DVD disk. The polarization dependence of the reflected near and far fields is studied, and, for a TM-polarized incident spot, plasmons are observed in the reflected far-field intensity.

© 2003 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(050.1970) Diffraction and gratings : Diffractive optics
(210.4590) Optical data storage : Optical disks
(210.4770) Optical data storage : Optical recording

Original Manuscript: March 25, 2002
Revised Manuscript: September 25, 2002
Manuscript Accepted: September 25, 2002
Published: February 1, 2003

J. M. Brok and H. P. Urbach, "Rigorous model of the scattering of a focused spot by a grating and its application in optical recording," J. Opt. Soc. Am. A 20, 256-272 (2003)

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